package day03;

public class IfElseDemo {
    public static void main(String[] args) {
        //满500打八折,不满500打九折
        double price = 600.0;
        if (price>=500){
            price *= 0.8;
        }
        else{
            price *= 0.9;
        }
        System.out.println("最终金额为"+price);

        //判断成绩是否合法
        double score = 100.1;
        if(score>=0 && score<=100){
            System.out.println("成绩合法");
        }
        else{
            System.out.println("成绩不合法");
        }
    }
}
